Ring cross-sustaining stance is a kind of necessary static-force motion for well-trained gymnasts in competition.
吊环十字支撑是高级体操运动员在比赛中不可缺少的静止用力动作。
The force is always perpendicular to the direction of motion.
因为这个力总是垂直,于运动的方向。
In particular, a force field with no curl is a force field that does not generate any rotation motion.
特别地，一个没有旋度的力场，就是一个不产生任何旋转运动的力场。
A manner, process, or method of performing an act or deed; habitual or vigorous activity or energy; movement; motion; a force that causes change.
一种态度、过程，或是一种采取动作和做事的方法；习惯、充足的活力或干劲；动作，行为，一种带来改变的力量。
Water in motion is a very powerful force.
水的流动是非常强大的力量。
So, what that means concretely is if you have a force field that conservative, then you cannot build somehow some perpetual motion out of it.
具体来讲，如果你有一个保守力场，就不可能建立起永恒的运动。
Drag is the force of air resistance pushing against a ball's motion and slowing it down, while lift is a force causing a ball to swerve off a straight path.
拉力是一种物体在空气中所受到的阻力，它能产生与球运行方向相反的作用力，减缓球的运行速度，而升力则是一种能使物体偏离直线运行轨迹的力。
There is no change in the motion of a body unless a resultant force is acting upon it.
除非有一合力作用于物体上，否则物体的方向是不会发生变化的。
What Galileo had said was no actually the sledge keep going because the natural motion of things is to keep going in the same direction they are going at the same speed unless acted upon by a force.
伽利略说其实雪橇并没有继续前进，物质的自然力以相同速度，朝着相同方向运行，除非受到了某个力的影响。
The direction of motion can be changed by the action of another force on a body.
在物体上作用另一个力，可以改变物体的运动方向。
Physics studies force, motion, heat, light, sound, electricity, magnetism, radiation, and atomic structure.
物理学专门研究力、运动、热、光、声、电、磁、辐射和原子结构。
By friction is meant a force opposing motion.
摩擦力指的是阻碍运动的一种力。
This force, which we call friction, always opposes motion.
这种总是阻碍运动的力我们称之为摩擦力。
Humans, he writes, “fail to see cold for what it is: the absence of heat, the slowing of molecular motion, a sensation, a perception, a driving force.”
他写道，人们 “看不到寒冷的真面目：没有丝毫热量，分子运动变慢，震撼，领悟，驱动力。”
The disadvantages of normal aircraft to realize flight path control can be overcome by using direct force control, and some new motion modes can be created.
采用直接力控制可弥补常规飞机在轨迹操纵方面的不足，并产生某些新的运动模式。
The TLP plane motion, stability, redistribution of tether force and dynamical factor has been viewed, during the rupture of one leg.
观察了单腿破断时张力腿平台的平面运动、稳性、张力的重新分配和动力系数。
At present work and energy in confined motion are treated with the method of work done by confined force which is analysed and calculated.
对于约束运动中的功和能，目前均采用具体分析和计算约束力所作功的方法来处理。
The fuel rack requires little force to accomplish its motion .
油泵齿条几乎毋须费力就能使之移动。
In three-dimensional computer animation we can use software constraints to force all or some of the motion within arcs.
在三维立体电脑动画，我们可以使用软件的限制，迫使全部或部分的议案，内弧。
For fixed damping and fixed excited frequency the motion of the beam under small amplitude of force is periodic, but becomes chaotic through period doubling bifurcation with increase of the force.
对固定的参数激励频率和阻尼，当参数激励幅值较小时梁的运动是周期的，但大幅值激励会使运动通过倍周期分岔变为混沌。
The control and monitor subsystem, the force feedback technique for steering wheel, the smooth switching for motion mode, and the telecommunication subsystem are detailed in the paper.
重点介绍了指挥站测控与监控系统、方向盘力反馈技术、无缝隙切换技术，以及数据与图象无线通信系统。
We conclude this section with two examples of motion under the action of a variable force.
下面我们举两个关于物体在变力作用下运动的例子来结束这一节。
From within the object or the force, there is no way to tell if you're in motion.
因为当你身处物体或者力量内部的时候，你是无法确定自己是不是处于运动中的。
Cyclone separator is a kind of equipment that USES rotary motion of gas-solid two-phase fluid to make the solid particle separated from the gas flow by centrifugal force.
旋风分离器是一种利用气固两相流体的旋转运动使固体颗粒在离心力的作用下从气流中分离出来的设备。
Find a way of force and motion coexist. Accordingly, the unification of the electromagnetic force, powerful force, gravity, and explains the turbulence and Earth's rotation principle.
发现了力和运动的共存方式。据此，统一了电磁力、强力、引力，并解释了湍流和地球自转的动力原理。
Mechanics deals with such ideas as inertia, motion force and energy.
力学研究诸如惯性、运动、力和能量之类的概念。
Mechanics is a science dealing with force and motion.
力学是一门有关力和运动的科学。
Whatever changes are brought about, motion pictures will always remain an important American art form and a significant cultural force.
不管发生了什么变化，电影将永远是美国的一种重要的艺术形式和重要的文化力量。
The parametric resonances and internal resonances of beams with axial force and supporting motion have been investigated.
本文分析了轴向力和支承运动作用下梁的参数共振和内共振问题。
Using Lorentz alterrnate, this paper bears out force of motion electric charge acting on static charge.
文中利用洛仑兹变换给出了运动电荷作用在静止电荷上的力。
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